GPU model | Vega 20 | Amethyst |
---|---|---|
GPU variant | Vega 20 GLXT | Amethyst XT |
Architecture | GCN 5.1 | GCN 3.0 |
Foundry | TSMC | TSMC |
Manufacturing process | 7 nm | 28 nm |
Number of transistors | 13,230 million | 5,000 million |
Die size | 331 mm² | 366 mm² |
Release date | Nov 18th, 2018 | — |
---|---|---|
Generation | Radeon Instinct | — |
Production | Active | — |
Interface | PCIe 4.0 x16 | — |
Base clock | 1200 MHz | — |
---|---|---|
Boost clock | 1746 MHz | — |
Memory clock | 1000 MHz 2 Gbps effective | 1362 MHz 5.4 Gbps effective |
GPU clock | — | 850 MHz |
Memory size | 16 GB | 4 GB |
---|---|---|
Memory type | HBM2 | GDDR5 |
Memory bus width | 4096 bit | 256 bit |
Bandwidth | 1,024 GB/s | 174.3 GB/s |
Shading units | 3840 | 2048 |
---|---|---|
TMUs | 240 | 128 |
ROPs | 64 | 32 |
Compute units | 60 | 32 |
Cache L1 | 16 KB (per CU) | 16 KB (per CU) |
Cache L2 | 4 MB | 512 KB |
Pixel rate | 111.7 GPixel/s | 27.20 GPixel/s |
---|---|---|
Texture rate | 419.0 GTexel/s | 108.8 GTexel/s |
FP16 (half) performance | 26.82 TFLOPS (2:1) | 3.482 TFLOPS (1:1) |
FP32 (float) performance | 13.41 TFLOPS | 3.482 TFLOPS |
FP64 (double) performance | 6.705 TFLOPS (1:2) | 217.6 GFLOPS (1:16) |
Slot width | Dual-slot | MXM Module |
---|---|---|
Length | 267 mm 10.5 inches | — |
TDP | 300 W | 250 W |
Suggested PSU | 700 W | — |
Outputs | 1x mini-DisplayPort | No outputs |
Power connectors | 1x 6-pin + 1x 8-pin | — |
DirectX | 12 (12_1) | 12 (12_0) |
---|---|---|
OpenGL | 4.6 | 4.6 |
OpenCL | 2.1 | 2.0 |
Vulkan | 1.2 | 1.2 |
Shader model | 6.4 | 6.3 |
Release date | — | Nov 23rd, 2014 |
---|---|---|
Generation | — | Crystal System (R9 M200) |
Production | — | End-of-life |
Interface | — | MXM-B (3.0) |
Predecessor | — | Solar System |
Successor | — | Mobility Radeon |